The device is bricked after abrupt power shutdown. It can be unbricked. All the firmware files for unbricking are available online. I wanted to unbrick but didn't have the patience or the time to do.
Anyone buying it, please note - do not buy if you are not technical enough with android stuff.
All the original components are available and all are in working condition - the box, power adapter, remote, hdmi cable, the original packaging. Expect bit of wear and tear.
Model name : MI box 3 (MDZ 16 AB)
Supports all apps - Youtube, Apple tv, Prime video, disney, jiohotstar, zee5, sun nxt etc.
Has a usb a port at the rear for external hard disk, pen drive, Digital analog converter.
Also the box has 3.5mm jack for speaker/headphone along with optical output.

If you need more information, feel free to reach out in the comment section. Shipping is free.